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[S390] vmemmap: fix off-by-one bug. 

If a memory range is supposed to be added to the 1:1 mapping and it
ends just below the maximum supported physical address it won't
succeed. This is because a test doesn't consider that the end address
is 1 smaller than start + size.
Fix the comparison.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2008-06-10 10:03:20 +02:00 committed by Martin Schwidefsky
parent 12829126aa
commit ee0ddadd08
1 changed files with 1 additions and 1 deletions
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2
arch/s390/mm/vmem.c
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@ -236,7 +236,7 @@ static int insert_memory_segment(struct memory_segment *seg)
{
struct memory_segment *tmp;
if (seg->start + seg->size >= VMEM_MAX_PHYS ||
if (seg->start + seg->size > VMEM_MAX_PHYS ||
seg->start + seg->size < seg->start)
return -ERANGE;